Total births
306
Unisex name · since 1912
Lewellyn
306 babies named Lewellyn in U.S. Social Security records since 1912, with the highest year being 1929. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
- 306
- total births
- 1912–1962
- years on record
- 1920s
- peak decade
- 32%
- born in that decade
Lewellyn is not among the current top-ranked boys names; 306 have been recorded since 1912.
According to the U.S. Social Security Administration, Lewellyn has been recorded 306 times among boys since 1912, though it is not among the currently most-used boys names, with its heaviest use in the 1920s. This profile covers year-by-year birth trends, decade totals, and state-level distribution, all derived directly from SSA birth-registration files spanning 1912 to 1962.
- 306 total births
- 1912–1962 years on record
- 1920s peak decade
- 32% born in that decade
Data updated Jun 2026
The verdict
306 boys have been named Lewellyn since 1912, peaking in the 1920s, last recorded in 1962.
- 306
- total births
- 1912–1962
- years on record
- 1920s
- peak decade
- 32%
- born in that decade
1920s
Peak decade
32% of everyone ever named Lewellyn was born in this single decade.
1929
Single peak year
17 babies were named Lewellyn in 1929 - its busiest year on record.
Lewellyn's usage pattern, beyond the headline number
Divide Lewellyn's SSA record in two at 1931 and the more recent half accounts for 45% of all births, the earlier half the remaining 55%, a genuinely balanced usage pattern. Its calmest year was 1914, with only 5 births recorded -- set against the 1929 peak of 17, that's the full swing in one name's fortunes.
Lewellyn at a glance
Last recorded 1962Peak year
1929
Current rank
Unranked
Active since
1912
Lewellyn popularity over time - boys
Annual U.S. births registered with the Social Security Administration · 1912–1962
- Peak year (1929)
- 17
- Annual births at peak, across 51 years of records
Lewellyn popularity over time - girls
33 total births recorded since 1917 (Lewellyn as girls' name)
Lewellyn by decade
Total births in each ten-year window, peak vs trough at a glance
1920s was Lewellyn's strongest decade.
97 babies received the name during that ten-year window, about 32% of all-time use.
Lewellyn births by decade
Total births in each ten-year window
- 1910s
1910s
58 births
- 1920s
1920s
97 births
- 1930s
1930s
66 births
- 1940s
1940s
42 births
- 1950s 33
1950s
33 births
- 1960s 10
1960s
10 births
What this shows Peak: 1920s at 97 births (32% of all-time use).
Frequently Asked Questions
How popular is the name Lewellyn? ▼
Lewellyn has been given to 306 babies in the U.S. since 1912, according to SSA data. Its last appearance in the data was 1962. 17 babies were born in 1929, its single highest year.
When was Lewellyn most popular? ▼
Lewellyn was most popular in the 1920s decade with 97 total births. The single peak year was 1929.
Is Lewellyn a unisex name? ▼
Yes, Lewellyn is used for both boys and girls. As a boy's name it has 306 births, and as a girl's name it has 33 births.
How long has the name Lewellyn been used? ▼
The SSA has tracked Lewellyn since 1912 -- 51 years through the most recent 1962 data.
What names are similar to Lewellyn? ▼
Names with a similar sound or spelling include Lewis, Lew, Lewie, Lewin, and 4 more. These share a common prefix and are also used for boys.
What to do with Lewellyn's data
- Lewellyn's decade-level peak was the 1920s (97 total births); usage has since declined to 10 in the 1960s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- Weighing it against an alternative? Put two names side by side. Compare names
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Lewellyn
Nearby Names Like Lewellyn
Names with a similar sound, spelling, or feel to Lewellyn
Lewis Boy
#431 155,766 births
Lew Boy
2,193 births
Lewie Boy
#12367 870 births
Lewin Boy
#5267 275 births
Lewi Boy
#7655 144 births
Compare Lewellyn side by side: Lewellyn vs Lewis Lewellyn vs Lew Lewellyn vs Lewie
Related Names
Names with a similar number of total births
Data Sources
Data as of June 2026. Source: U.S. Social Security Administration (SSA).
According to the Social Security Administration, this profile draws directly from the agency's public-use baby-name files (updated June 2026). See our methodology for the full extraction, aggregation, and privacy-suppression rules.
Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications, National Data, 1912–1962 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Lewellyn: Baby Name Since 1912 - 306 Births, Peak 1929." NameAlmanac. Accessed via https://namealmanac.com/name/lewellyn. Licensed CC BY-SA 4.0.
Name Almanac is rendered directly from the Social Security Administration's public baby-name files, no number is typed in by an editor. This profile for Lewellyn draws directly on SSA national and state-level files, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.